July 2017
Intermediate to advanced
158 pages
3h 41m
English
Content preview from Java 9 Regular Expressions
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Extract common repeating substrings out of alternation
Consider the following pattern:
(playground|player|playing)
Instead of using the preceding pattern, it is better to extract the common substring, play, and move it to the left of alternation, as follows:
play(ground|er|ing)
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